Novel spray gun for waste gas mixing

Abstract

The utility model discloses a novel spray gun for waste gas mixing, which comprises an outer pipe and an inner pipe, the inner pipe is arranged in the outer pipe, and the inner pipe and the outer pipe are coaxial; one end of the outer pipe is closed and the other end is open; one end of the inner pipe is a gas inlet end, the other end of the inner pipe is a gas outlet end, the gas inlet end penetrates out of the closed end of the outer pipe and then is connected with a waste gas pipe, the gas outlet end is hemispherical, inclined gas outlet holes are evenly distributed in the gas outlet end in the circumferential direction, and the inclined gas outlet holes incline towards the direction of the outer pipe; a cavity between the inner pipe and the outer pipe is an air duct; an air inlet pipe is arranged on the side wall of one side, close to the closed end, of the outer pipe; a tangential guide plate is arranged on one side, close to the air outlet end of the inner pipe, of the air duct; a spiral cyclone body is arranged in an air duct between the air inlet pipe and the tangential flow guide plate; inclined flow guide holes are evenly formed in the outer edge of the tangential flow guide plate in the circumferential direction at intervals and incline towards the center of the air outlet end, the structure is compact, waste gas and air can be fully mixed, and the mixing effect is good.

Description

Technical Field

[0001] The utility model relates to the field of waste gas incineration treatment, in particular to a new type of spray gun for waste gas mixing. Background Art

[0002] At present, the conventional method for treating waste gas is incineration. The waste gas is mixed with air and then sprayed into an incinerator for incineration treatment. Most of the existing spray guns directly mix air and waste gas through a spray pipe and discharge air in parallel. The defect of this mixing method is that the air and waste gas are not evenly and sufficiently mixed, resulting in insufficient combustion of the waste gas.

[0003] Chinese Patent CN201293323Y discloses a swirl spray pipe for a double-chamber kiln burner. A swirl device is arranged inside the fuel spray pipe, so that the fuel gas has a certain inclination angle when spraying out, and then mixes with the combustion-supporting gas at a certain crossing angle, which can make the fuel burn more fully. However, the spray pipe structure disclosed in this patent is only used for the swirl of fuel gas. Although it can improve the mixing effect of fuel gas and combustion-supporting gas to a certain extent, there is still room for improvement. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a new type of spray gun for waste gas mixing.

[0005] The innovation point of the utility model is that the structure of the application is compact, and the waste gas and air can be fully mixed with good mixing effect.

[0006] To achieve the above-mentioned utility model purpose, the technical solution of the utility model is as follows:

[0007] A new type of spray gun for waste gas mixing includes an outer pipe and an inner pipe. The inner pipe is arranged inside the outer pipe and the two are coaxial. One end of the outer pipe is closed and the other end is open. One end of the inner pipe is an air inlet end and the other end is an air outlet end. The air inlet end passes through the closed end of the outer pipe and is connected to a waste gas pipe. The air outlet end is hemispherical, and obliquely arranged air outlet holes are evenly distributed along the circumferential direction on the air outlet end. The air outlet direction of the obliquely arranged air outlet holes faces the outer pipe. The cavity between the inner pipe and the outer pipe is an air duct. An air inlet pipe is arranged on the side wall of the outer pipe close to the closed end. A tangential guide plate is arranged on the air duct close to the air outlet end of the inner pipe. A spiral cyclone body is arranged in the air duct between the air inlet pipe and the tangential guide plate. Obliquely arranged guide holes are evenly spaced along the circumferential direction on the outer edge of the tangential guide plate, and the obliquely arranged guide holes incline towards the center of the air outlet end of the inner pipe.

[0008] Further, the diameter ratio of the inner pipe to the outer pipe is 1:2.

[0009] Further, the distance between the tail end of the spiral cyclone body and the tangential guide plate is 10-12 cm.

[0010] Furthermore, the distance between the tangential flow guide plate and the end of the air outlet of the inner tube is 2 - 3 cm.

[0011] Furthermore, the quantity ratio of the inclined air outlet holes to the inclined flow guide holes is 1:3.

[0012] Furthermore, the inclination angle of the inclined flow guide holes is 45°.

[0013] Furthermore, the inclination angle of the inclined air outlet holes is 45°.

[0014] The beneficial effects of the present utility model are as follows:

[0015] First: With the design of the inner and outer tubes, the waste gas is introduced into the inner tube, and the air is introduced into the air duct between the inner tube and the outer tube. On the one hand, the structure is compact, and on the other hand, it is convenient for subsequent mixing.

[0016] Second: A spiral cyclone body and a tangential flow guide plate are arranged in the air duct. The spiral cyclone body can generate a swirling effect on the air, and the inclined flow guide holes on the tangential flow guide plate can gather and guide the swirling air; the inclined air outlet holes on the air outlet end of the inner tube have a guiding effect on the waste gas; ensuring the uniformity of the mixing of the waste gas and the air, and further ensuring that the subsequent waste gas can burn fully.

[0017] Third: The quantity ratio of the inclined air outlet holes to the inclined flow guide holes is 1:3, which can ensure that 1 waste gas air flow is surrounded by 3 air air flows, promoting better mixing of the two. Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the present utility model.

[0019] Figure 2 It is a side view of the present utility model.

[0020] In the figure: 10 is the outer tube, 11 is the air duct, 12 is the air inlet pipe, 20 is the inner tube, 21 is the air inlet end, 22 is the air outlet end, 23 is the inclined air outlet hole, 30 is the tangential flow guide plate, 31 is the inclined flow guide hole, 40 is the spiral cyclone body. Detailed Embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be described clearly and completely in conjunction with the drawings.

[0022] A new type of spray gun for waste gas mixing, comprising an outer tube 10 and an inner tube 20; the inner tube 20 is arranged inside the outer tube 10 and the two are coaxial; one end of the outer tube 10 is closed and the other end is open; one end of the inner tube 20 is an air inlet end 21 and the other end is an air outlet end 22, the air inlet end 21 passes through the closed end of the outer tube 10 and is connected to the waste gas pipe, the air outlet end 22 is hemispherical, and circumferentially uniformly distributed inclined air outlet holes 23 are arranged on the air outlet end 22, and the air outlet direction of the inclined air outlet holes 23 faces the outer tube 10; the cavity between the inner tube 20 and the outer tube 10 is an air duct 11; an air inlet pipe 12 is arranged on the side wall of the outer tube 10 close to the closed end, and a tangential guide plate 30 is arranged on the air duct 11 close to the air outlet end 22 of the inner tube 20; a spiral cyclone body 40 is arranged in the air duct 11 between the air inlet pipe 12 and the tangential guide plate 30; the outer edge of the tangential guide plate 30 is provided with circumferentially uniformly spaced inclined guide holes 31, and the inclined guide holes 31 are inclined towards the center of the air outlet end 22 of the inner tube 20.

[0023] Furthermore, the designs of the outer tube 10 and the inner tube 20 are compact, which also helps with the subsequent mixing of gases.

[0024] Furthermore, the diameter ratio of the inner tube 20 to the outer tube 10 is 1:2.

[0025] Furthermore, the distance between the tail end of the spiral cyclone body 40 and the tangential guide plate 30 is 10 - 12 cm.

[0026] Furthermore, the distance between the tangential guide plate 30 and the end of the air outlet end 22 of the inner tube 20 is 2 - 3 cm.

[0027] Furthermore, the number ratio of the inclined air outlet holes 23 to the inclined guide holes 31 is 1:3; it can ensure that 1 waste gas air flow is surrounded by 3 air air flows, promoting better mixing of the two.

[0028] Furthermore, the inclination angle of the inclined guide holes 31 is 45°.

[0029] Furthermore, the inclination angle of the inclined air outlet holes 23 is 45°.

[0030] The working principle of this application:

[0031] Due to the action of the spiral cyclone body 40, the air forms a swirling flow in the air duct 11, and the swirling air is mixed with the waste gas ejected from the air outlet end 22 of the inner tube 20 through the inclined guide holes 31. Since the air outlet direction of the inclined air outlet holes 23 faces the outer tube 10, and the inclined guide holes 31 are inclined towards the center of the air outlet end 22, the air and the waste gas collide, and at the same time the air has a certain inclination and rotation angle, so that the mixing effect of the two is better and the mixing is more uniform.

[0032] The described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present utility model without creative efforts shall fall within the protection scope of the present utility model.

Claims

1. A new type of exhaust gas mixing spray gun, characterized by: The invention comprises an outer tube (10) and an inner tube (20); the inner tube (20) is arranged inside the outer tube (10), and the two are coaxial; one end of the outer tube (10) is closed, and the other end is open; one end of the inner tube (20) is an air inlet end (21), and the other end is an air outlet end (22); the air inlet end (21) passes through the closed end of the outer tube (10) and is connected to an exhaust pipe; the air outlet end (22) is hemispherical, and oblique air outlet holes (23) are evenly distributed along the circumference of the air outlet end (22); the air outlet direction of the oblique air outlet holes (23) is toward the outer tube (10); The cavity between the inner tube (20) and the outer tube (10) is an air duct (11); an air inlet pipe (12) is arranged on the side wall of the outer tube (10) close to the closed end, and a tangential guide plate (30) is arranged on the side of the air duct (11) close to the air outlet end (22) of the inner tube (20); a spiral cyclone body (40) is arranged in the air duct (11) between the air inlet pipe (12) and the tangential guide plate (30); and oblique guide holes (31) are evenly spaced along the circumferential direction on the outer edge of the tangential guide plate (30), and the oblique guide holes (31) are inclined toward the center of the air outlet end (22) of the inner tube (20).

2. A new type of exhaust gas mixing spray gun according to claim 1, characterized in that: The diameter ratio between the inner tube (20) and the outer tube (10) is 1:

2.

3. A new type of exhaust gas mixing spray gun according to claim 1, characterized in that: The distance between the tail end of the spiral cyclone body (40) and the tangential guide plate (30) is 10-12 cm.

4. A new type of exhaust gas mixing spray gun according to claim 1, characterized in that: The distance between the tangential guide plate (30) and the end of the gas outlet end (22) of the inner tube (20) is 2-3 cm.

5. The novel exhaust gas mixing spray gun according to claim 1 is characterized in that: The ratio of the number of the oblique air outlet holes (23) to the number of the oblique flow guide holes (31) is 1:

3.

6. The novel exhaust gas mixing spray gun according to claim 1 is characterized in that: The inclined guide hole (31) has an inclination angle of 45°.

7. The novel exhaust gas mixing spray gun according to claim 1 is characterized in that: The inclination angle of the oblique air outlet (23) is 45°.

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